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TEA [102]
2 years ago
6

What is the value of the expression 30 - 9+ 3 - (12 = 4)?

Mathematics
1 answer:
Flauer [41]2 years ago
8 0

Answer:

21

Step-by-step explanation:

30 - 9 +3

30 - 12

18

18 - 12=4

      12/4 = -3

18 - -3

21

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Please help me due today i really need ur help :(
enyata [817]

Answer:

1) B. $12

2) B. Rich burns 1 more calorie per minute than Katie

3) C. Jeffery walks 5 meters per minute slower than Fumi.

Step-by-step explanation:

1)  earnings / hours = salary

salary = 24/2 = 60/5 = 96/8 = 12

salary = $12

2) The question describes Rich's graph to have the function of "y=8x." The graph shown that represents Katie's number of burned calories has the function of "y=7x." From that we can conclude Rich burns one more calorie per minute. See attached file for graph.

3) The question describes Fumi's graph to have the function of "y=85x." In order to find the function of Jeffrey's graph, we must use the two points provided from the graph. The point (10, 800) tells us that the point (1,80) would also fall on the line. From that, we can determine Jeffery's function to be "y=80x." 80 is 5 less than 85, so Fumi walks 5 meters per minute faster than Jeffery.

4 0
3 years ago
Please explain to me how to solve this problem and what would be the correct answer answer asap!!!
hodyreva [135]
Given
f(x)= -3x - 5
g(x)= 4x - 2

Find
(f - g)(x)
substitute the f and g values in (f - g)

(f - g)(x)= -3x - 5 - (4x - 2)
change the signs in parentheses because there is a negative sign in front of the parentheses

(f - g)(x)= -3x - 5 - 4x + 2
combine like terms

(f - g)(x)= -7x - 3


ANSWER: (f - g)(x)= -7x - 3

Hope this helps! :)
5 0
3 years ago
Solve each Inequality. Write your answer 2.) x + 9 > 16 o​
MrRissso [65]

Answer:

o< 1/16x + 9/16

Step-by-step explanation:

x+9>16o

Flip the equation.

16o<x+9

Divide both sides by 16.

16o/16 < x+9/16

o< 1/16x + 9/16

5 0
3 years ago
What are the eletric charges of three subatomic particles​
Nata [24]

Answer:

3

Step-by-step explanation:

as a person who answers in the mathematics session

i will tell you that the answer is 3

7 0
3 years ago
A number is 4 Hundreds more than 142. What is the number ?
weqwewe [10]
542 beacuse 142+400
4+1=5 4+0=a 2+0=2
4 0
3 years ago
Read 2 more answers
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